Just where and when humans first observed the chemical reaction between oil and potash is unknown. One legend says it was at “Mount Sapo” in ancient Rome, where a creek flowed over a deposit of wood ash and animal fats created by sacrificial fires for the gods. There’s evidence that... Read more »

Just where and when humans first observed the chemical reaction between oil and potash is unknown. Legend says it may have occurred in ancient Rome, on Sapo Hill, in an unusual scenario where a creek flowed over a deposit of wood ash and animal fats, created through many years of... Read more »

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